Window-screen



(No Model.)

J. W. PEASE.

WINDOW SCREEN.

No. 409,801. Patented Aug. 2'7, 1889.

UNITED STATES PATENT OEEIcE.r

.IOHN IV. PEASE, OF PORTLAND, MAINE.

WINDOW-SCREEN.

SPECIFICATION forming part of Letters Patent No. 409,801, dated August 27, 1889. Application filed July l0, 1888. Serial Xo. 279,534. (No modell) To @ZZ whom, z5 may con/cern,.-

Be it known that I, JOHN IV. PEASE, a citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented certain. new and 'useful Improvements in VVindow-Screens; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to window-screens such as are used for excluding flies and other insects from houses; and it is directed to the production ofa screen which shall be cheaply made, durable, and readily taken out and put in.

Vindow-screens require to be removed from the window many times, and for this reason it is very desirable to have a screen which, while titting the window closely, shallbe readily removed and put back.

My device is applicable to that form of screen which is made with grooved side bars litting tongues or strips secured to the sides of the window-casing5 or it maybe applied to screens having tongues adapted to lit grooves in the casing.

Screens have before been made with a friction-plug inserted in a recess or hole in the side bar and a spring for forcing the plug outward for the purpose of holding the screen in place, but such plugs were expelled by the force of the spring as soon as the screen was removed. Other screens have been made having a construction similar to that last named,

with stems for retracting the same extending through the side bar.

My invention consists of a screen having apertures extending through its side bar, friction-plugs in said aperture, coiled springs back of said plugs forforeing them outward, a plate on the inner edge of said side bar covering each of said apertures, a hole in said plate, a spindle passing through said hole, its inner end being secured to said plug and its out-er end being enlarged to prevent its passage through said hole, said stem being provided with a notch for engaging the edge of said hole whereby the said plug may be held back while the frameis taken out and put in.

I illustrate in the accompanying drawings a device embodying my invention, although I do not wish to be restricted to the exact construction here shown.

In the drawings, Figure l is a front elevation of a screen fitted with iny improvement. Fig. 2 is an enlarged section through the line at a: of Fig. 1. Fig. 3 is a section through the line m o; of Fig. 2.

A andA are the side bars of the screen. In the outer edge of each side bar is the usual longitudinal groove a, adapted to lit the tongue l), secured to the windowcasing. A hole or recess cl is formed in the side bar A, preferably by boring horizontally through the side bar a hole having a diameter approximately equal to the width of the groove. The inner end of this hole is closed or partially closed as here shown by means of a plate C of metal, which is secured to the inner edge of the side bar. This plate has a hole or opening C smaller than the hole e and axially in line with it. A plug B, preferably of hard wood boiled in oil to give it the necessary waterproof character, is inserted in the hole a', a spiral spring D being placed between its inner end and the plate O. This spring, being compressed, has a tendency to force the plug out# ward. A pin E, having on its end a knob or handle c, passes through the hole O a-nd enters the end of the plug B, as here shown, and is secured therein, the pin being provided with a notch c', having a shoulder adapted to prevent its being forced inward by the pressure of t-he spring when itis made to engage the edge of the hole O in the plate C. It is designed to have the hole O slightlylarger than the pin E, so that the latter will move easily in and out. Two of these triction-plugs, as here shown, are placed in 'one of the side bars of the frame, the other side bar A being constructed in the usual manner.

If the grooves and tongues are constructed of the right dimensions, as hereinafter shown, it will only be necessary to apply the device to one side bar alone.

The operation of my device is evident from its construction. When the screen is to be inserted, the pin E is pulled inward until the shoulder of the notch e catches on the edge of the opening O in the plate O. The groove will thus be left free. The side barA is now placed in position, the tongue on the casing entering the groove in the side bar to its full IOO depth, or nearly so. Vhen the screen is in this position, the opposite side bar will just swing clear of its tongue, which is made to project from the casing, preferably about one-l half as much as the opposite tongue. rlhe pins are noW released and the spring presses each pin outward against the tongue, forcing the frame bodily over against the opposite tongue. In manipulating the pin the knob or handle at the end is used, and it is obvious that this may be of any desired form.

If desired, the notch c may be omitted from the pin, the pin being drawn back and held until the screen is inserted and then released.

The screen thus constructed may be readily removed. It can also be raised and lowered,

. and the friction of the plugs will cause it to remain in any position.

An important function of the knob or handle e is to prevent the pin from being drawn through the opening C', which may be formed in a metal plate, as here shown; or it may be formed in the Wood of the side bar.

As tWo or more of these friction-plugs are required in each side bar, it is evident that in removing the screen it would be difficult for one person to hold them retracted Without some automatic device for holding them back. My invention enables one person to retract each plug separately and secure them in place. The screen is then in position to be freely taken out and put in. The screen having been placed in position, the friction-plugs are quickly placed in operative position by releasing the notch from the plate.

I claim-- The herein-described window-screen,havin g apertures through the side bars and frictionplugs therein, a spiral spring back of each plug for forcing it outward, a plate secured to theinner edge of the said side bar covering said aperture and a hole in said plate,a stein passing through said hole, having its inner end secured to said plug, its outer end being enlarged to prevent it from passing through said hole, and a notch in said stem adapted to engage said plate for holding said plug in a retracted position, substantially as shown.

In testimony whereof I affix my signature in presence of tWo Witnesses.

JOHN IV. PEASE.

NVitnesses:

S. 'W. BATES, E. S. HAY. 

